kaelix

I'm replacing the seals on the oil pump and the spring got dislodged. How does it fit back into the pump?

Is it supposed to be perfectly round or are the crimps normal? I can't seem to find anything in PET/WSM or searching that shows how this spring fits into the pump.

Mark Anderson

That spring is suppose to be inside the seal

davek9

Right, there is no "spring" in the Oil pump, that is part of the Shaft seal.

Rob Edwards

Make sure you have the 'dot' on one surface of the outer gerotor gear facing the engine block.

Mark Anderson

Yes just match the dots on both gears

Imo000

That seal spring is a little chewed up. How did you managed to do this? Either way, get a new one.

kaelix

Not sure how it happened, I assume it was already like that, the pump had a bunch of black stuff around the bolts, I assume the PO tried to shortcut something or didn't have the right seals.

Do you know the part #, I can't find this spring in the PET.

Mark Anderson

The spring is not available separately. It's inside this oil seal which you need to replace
http://www.mailordercentral.com/928i...113%20275%2040

kaelix

That's where I was confused, because I got a new seal from Roger, and there's no spring in the box or on the seal.

928 at last

The spring is inside the seal itself.

kaelix

I've considered that when the seal is pressed in, i'll see the spring, but just want to confirm, so i don't possibly waste a seal.

928 at last

The spring keeps tension on the seal where it surrounds the shaft. In the shot above, the spring is outside of the seal and useless.
In my experience, the seal is now trash as you won't be able to secure the spring back from where it came from. I think, and I stand to be corrected here, that in this case, the spring is encapsulated in the seal material to maintain the seal integrity and prevent exactly what the picture shows, which would mean that the seal material has torn to release that spring.
You are using oil on the shaft and seal prior to assembly...right?

928 at last

Sorry, to answer the question directly...no you won't see the spring when the seal is installed.

Rob Edwards

Kiloword.

Imo000

^^^^It's not that hidden, gently fold down a small section of the inner ring and you will see the spring. Reading you questions got mr worried, maybe you should find someone that knows how to install a seal and properly slode it on the pump shaft.